Kadiza Sultana, one of three British schoolgirls who left London last year to join Daesh, has reportedly died in Syria.

Attorney Tasnime Akunjee said her family learned of her death in Raqqa, Syria, a few weeks ago.

She was believed to have been killed by a Russian air strike in Raqqa, the group’s stronghold in the country, ITV News reported on Thursday.

Sultana was 17 years old and, according to her family, died just as she was making plans to flee the war-torn country and return to Britain.

“One would hope that the only benefit out of this is – as a tombstone and testament to others, that these are the risks actually involved in going to a war zone – to dissuade people from ever making that choice really,” Akunjee said.

In February 2015, Sultana and two other schoolgirls from east London boarded a flight to Turkey and then a bus to the Syrian border.